<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<script>

		数据 = prompt("你多大了");

		document.write(数据);

		age  =18;

		console.log(age);

		username  ="学并思";

		address = "广州";

		order_id = 123123123;

		orderId = 453453445345;

		// a = 20;
		// A = 30;

		
		// a  = 100;

		// b =  200;

		// c  = a+b;

		// document.write(c);




	</script>
</head>
<body>
	
</body>
</html>